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World D4: Set Meals

Compose v2 vs v5

You will learn: to tell old Compose advice from current advice.

Checked with Docker Engine 29 on 31 Oct 2026

The problem

Your laptop~/kedai-kancil

  • No open hatches

Lunchboxes (containers)

  • No containers yet

Frozen packs (images)

  • kedai-kancil-api:latest6 layers · 244MB
  • kedai-kancil-web:latest9 layers · 92.6MB
  • nginx:1.30-alpine8 layers · 93.5MB
  • node:24-alpine4 layers · 244MB
  • postgres:18-alpine9 layers · 433MB
  • redis:8-alpine7 layers · 162MB

A blog post from 2019 says: run docker-compose up. Your laptop says: command not found. Is your Docker broken?

Watch

Tap each point on the timeline.

Same set meal, new menu cover. Your Docker is fine: the dash is the old name. Tap through the story.

Predict

Why did the number jump from v2 straight to v5?

Try it

Check which Compose your kitchen has.

Your laptop~/kedai-kancil

  • No open hatches

Lunchboxes (containers)

  • No containers yet

Frozen packs (images)

  • kedai-kancil-api:latest6 layers · 244MB
  • kedai-kancil-web:latest9 layers · 92.6MB
  • nginx:1.30-alpine8 layers · 93.5MB
  • node:24-alpine4 layers · 244MB
  • postgres:18-alpine9 layers · 433MB
  • redis:8-alpine7 layers · 162MB

Check

Would you use this today? Right for yes, left for no.

Swipe right for good, left for needs work. Or use the buttons.

1 / 4docker compose up -d

You did it!

You can now tell old Compose advice from current advice.

Go deeper (optional)

The Go SDK lets Go programs load, check and run Compose projects. No command line needed. It is for tool builders, not daily work. Your files follow the Compose Specification, which has no version number. Real rep (optional): run docker compose version on your machine.